Acting like a grown-up means voting strategically, especially when the other option is a fascist. Staying home to pout, or voting third party which amounts to the same thing, is an infantile position which reeks of “I got mine, fuck everyone else” privilege.

You might weather a second Trump term okay due to your privilege. Plenty of folks won’t be so lucky, and if you refuse to vote for Biden in November, you’re just as guilty as the MAGA conservatives who voted for Trump if he wins.